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String de trás para frente

/ Published in: JavaScript
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  1. var stringOri = "string";
  2. var stringLen = stringOri.length;
  3. var reverse = '';
  4. var x = 0;
  5.  
  6. while(x < stringLen+1){	
  7.     reverse += stringOri.substr(stringLen-x,1);
  8.     x++;
  9. }
  10.  
  11. document.write(reverse); // vai retornar "gnirts"

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